Buffalo Cave Flowstone - Annual Laminae (NERC grant NE/J00443X/1)
Annual lamina thickness (microns), lamina count, and age model (Ma, years) for the Early Pleistocene (Lines 1 and 2) and early Holocene speleothems from Buffalo Cave, South Africa. The samples, methods and results are described in full in: Hopley, P. J. et al. (2018) Orbital precession modulates interannual rainfall variability, as recorded in an Early Pleistocene speleothem. Geology. DOI:10.1130/G45019.1
dataset
:
http://data.bgs.ac.uk/id/dataHolding/13607346
English
Geoscientific information
GEMET - INSPIRE themes, version 1.0:
BGS Thesaurus of Geosciences:
Pleistocene
NGDC Deposited Data
Speleothems
Lamination
Free:
Free:
NERC_DDC
29.1700,
-24.1500,
29.1800,
-24.1400
SOUTH AFRICA [id=670000], ZA, ZAF
creation: 2018-06-26
2011-09-01
-
2014-09-01
Birkbeck, University of London
Dr Philip Hopley
Malet Street,
London,
WC1E 7HX
email:
not available
Role: point of contact
Birkbeck, University of London
Dr Philip Hopley
Malet Street,
London,
WC1E 7HX
email:
not available
Role: principal investigator
Data Quality
Speleothems were imaged on a Leica SP2 confocal microscope using an oil immersion objective lens. Individual images of 1024 x 1024 pixels at 2x zoom were acquired over the entire length of the speleothems by 3 microscope fields in the y axis. The Leica LCS software automatically stitched all the image frames to produce a montage of both samples. Laser excitation wavelengths of 488 nm and 515 nm were used to detect the autofluorescence of the organic matter with emission detection set to 540 – 680 nm; pixel resolution was 0.183 µm. Greyscale line profiles were produced for each photomosaic using the image processing software ImageJ and imported into Matlab. The laminae were measured and counted using the automated peak-counting algorithm of Smith et al. (2009). Age models were produced using a combination of magnetostratigraphy, orbital tuning and U-Th dating (see Hopley et al., 2018).
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Constraints
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
Metadata about metadata
6f9e75e7-993e-620d-e054-002128a47908
British Geological Survey
Environmental Science Centre,Keyworth,
NOTTINGHAM,
NG12 5GG,
United Kingdom
tel: +44 115 936 3100
email:
enquiries@bgs.ac.uk
Role: point of contact
2024-04-24